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CVE-2022-50070 is a race condition in the Linux kernel Multipath TCP (MPTCP) implementation. An MPTCP-level transmission or retransmission can race with connection closure through mptcp_close(). The packet scheduler previously evaluated a subflow's state before acquiring that subflow socket's lock, allowing it subsequently to queue or retransmit data on a subflow socket that had already been closed. The condition can trigger an inet_sock_destruct warning during socket teardown. The upstream fix revalidates subflow socket status while holding the subflow socket lock and adds the corresponding status check for the fallback-to-TCP path.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel MPTCP closed-subflow data-queueing flaw.
Linux kernel Multipath TCP flaw involving data queued on closed subflows.
A Linux kernel MPTCP flaw involving data being queued on closed subflows.
A Linux kernel Multipath TCP (MPTCP) flaw involving queuing data on closed subflows.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.